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首页> 外文期刊>Soil Biology & Biochemistry >Root colonization and growth promotion of wheat and maize by Pseudomonas aurantiaca SR1
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Root colonization and growth promotion of wheat and maize by Pseudomonas aurantiaca SR1

机译：绿假单胞菌SR1对小麦和玉米的根系定植和生长促进

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Wheat (Triticum aestivum L.), rice (Oryza sativa) and maize (Zea mays L.) are the most important cereals worldwide. However, in the last few years, soil has been submitted to both use and handling pressures due to the increase in agricultural practices, which are leading to its degradation. The use of plant growth-promoting rhizobacteria (PGPR) as inoculants constitutes a biological alternative for sustainable production. Pseudomonas aurantiaca SR1 was formulated as an inoculant in order to evaluate its growth promotion effect in the field when applied on maize and wheat seeds at the sowing time. P and N fertilization treatments were also included in the assays. P. aurantiaca SR1 colonized the root system of both crops and it persisted at appropriate population densities. It also showed a significant plant growth-promoting effect that was reflected in the yield. Another relevant finding was that both crops, when inoculated with P. aurantiaca SR1, presented higher yields with fertilization doses lower than those conventionally applied. This indicated its potential use as a reasonable alternative for crop production, with a minimization of the ecological impact.
机译：小麦（Triticum aestivum L.），水稻（Oryza sativa）和玉米（Zea mays L.）是世界范围内最重要的谷物。然而，在最近几年中，由于农业实践的增加，土壤承受了使用和处理的压力，导致土壤退化。使用植物促生根瘤菌（PGPR）作为接种剂构成了可持续生产的生物学替代方案。为了在播种时将其应用于玉米和小麦种子上，以评估其在田间的生长促进效果，配制了Aurantiaca aurantiaca SR1作为接种剂。试验中还包括磷和氮的施肥处理。 P. aurantiaca SR1定居在两种农作物的根系中，并以适当的种群密度持续存在。它还显示出显着的促进植物生长的作用，这反映在产量上。另一个相关的发现是，两种农作物都接种了极光假单胞菌SR1后，其施肥剂量均低于常规施肥。这表明它有可能被用作作物生产的合理替代品，同时最大限度地减少了生态影响。

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